Breathe! We’re all here, because we’re STILL all here!
You’ll get responses from others who’ve gone thru similar procedures.

For me, and my level of nervousness, if I was going to have a stereotactic biopsy I’d ask for something to relax me during the procedure and ask about asking something like Tylenol beforehand. I like to go in as prepared as possible to have a good outcome with as little inconvenience to me as possible.
I had a core needle biopsy. The radiologist told me the lidocaine (Novocain) used to numb the skin will sting for 20 seconds. I realized that was the same amount of time we’re supposed to wash our hands - and she and I laughed that I was going to sing the Happy Birthday song to get through the stinging stage. There was a sting, I didn’t sing, but the entire procedure was not painful.
Wishing you peace through this early time, keep us updated on how things are going!